Replace RenderArena with PartitionAlloc

Source/core/svg/SVGGElement.cpp

Index: Source/core/svg/SVGGElement.cpp
diff --git a/Source/core/svg/SVGGElement.cpp b/Source/core/svg/SVGGElement.cpp
index 4eb8f3063c9fef8c66258838ede50c59a6b127a4..dd54c5443c02272c119264ba75ccbae59f733676 100644
--- a/Source/core/svg/SVGGElement.cpp
+++ b/Source/core/svg/SVGGElement.cpp
@@ -92,9 +92,9 @@ RenderObject* SVGGElement::createRenderer(RenderStyle* style)
     // subtree may be hidden - we only want the resource renderers to exist so they can be
     // referenced from somewhere else.
     if (style->display() == NONE)
-        return new (document()->renderArena()) RenderSVGHiddenContainer(this);
+        return new RenderSVGHiddenContainer(this);
 
-    return new (document()->renderArena()) RenderSVGTransformableContainer(this);
+    return new RenderSVGTransformableContainer(this);
 }
 
 bool SVGGElement::rendererIsNeeded(const NodeRenderingContext&)